Generally, shower enclosures in RV's that are not one piece are not caulked at the horizontal seams. There is enough of a overlap that water cannot cause damage. If that type is caulked, any moisture that enters can't drain and evaporate and may cause mold or damage.
I received good answers, no problems any moorI have an Alente 2019 26x
I realized that there had never been caulking,between the 4 walls and the base, it's normal, if yes wher go the water that enters between the walls and the base.